Simulation of Preform Strain State in Different Processes of Spinning
作者单位：Th Voronezh state technical university Russia 394026. Voronezh Moscow avenue 14 faculty of aircraft construction
会议名称：《The Fourth International Conference on Physical and Numerical Simulation of Materials (ICPNS’2004)》
会议日期：2004年
学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化]
关 键 词：Spinning Thin wall Shell Simulation
摘 要：正The model of process of a rotation extract of thin-wall shell details without deliberate thining, taking into account the sizes of the center of plastic deformation, treatment schedules, friction, rejected tags, pathways of motion and sizes of the distorting tool is esteemed. The problem of defining of the deformed condition is decided by minimization of plastic work of *** formmaking of shells by methods of a rotation extract is an effective process of manufacturing of thin-wall details. This process is distinguished by the low cost of a technological equipment, reduction of quantity of technological transitions and concentration of several operations on one equipment at enough split-hair accuracy both surface figure of details and capability of manufacturing details of the considerable sizes. Allowing rather low energy output of process, it is possible to consider it as perspective for modern floppy production. The bottleneck of applying know-hows of a rotation extract is designing of a master schedule and pathways of movement of the distorting tool in process of formmaking. During a rotation extract there is a local cyclical appendix of a distorting effort to rotated bar, that causes complexities at calculation deformed and stressed state of a moulded shell at present instants of ***-term theoretical and the experimental researches of process have allowed to create rather prime model of the deformed condition of bar. The given model bases on the justified and tested hypothesis about z-axes symmetry of the deformed condition of a shell after a complete cycle of movement of the center of plastic deformation in a circumferential direction. This hypothesis allows at calculation to eliminate from consideration the movement of the center in a circumferential direction and to esteem movement of the center of plastic deformation only in a meridional direction in all processes of a rotation extract: without deliberate thining and with the thining at m